主题新回顾(发布时间:2010-12-11 11:08:29) |
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-- 作者:wangxinxin
-- Oracle备份恢复之利用dbms_backup_restore恢复数据库 引用
RMAN> run { 2> allocate channel ch00 device type disk; 3> backup database include current controlfile format '/backup/full%t' tag='FULLDB'; 4> sql 'alter system archive log current'; 5> backup archivelog all format '/backup/arch%t' tag='ARCHIVELOG'; 6> release channel ch00; 7> } allocated channel: ch00 channel ch00: sid=17 devtype=DISK Starting backup at 20-JAN-10 channel ch00: starting full datafile backupset channel ch00: specifying datafile(s) in backupset including current controlfile in backupset input datafile fno=00001 name=/app/oracle/oradata/ora9i/system01.dbf input datafile fno=00002 name=/app/oracle/oradata/ora9i/undotbs01.dbf input datafile fno=00005 name=/app/oracle/oradata/ora9i/example01.dbf input datafile fno=00011 name=/app/oracle/oradata/ora9i/STREAM01.dbf input datafile fno=00010 name=/app/oracle/oradata/ora9i/xdb01.dbf input datafile fno=00006 name=/app/oracle/oradata/ora9i/indx01.dbf input datafile fno=00009 name=/app/oracle/oradata/ora9i/users01.dbf input datafile fno=00003 name=/app/oracle/oradata/ora9i/cwmlite01.dbf input datafile fno=00004 name=/app/oracle/oradata/ora9i/drsys01.dbf input datafile fno=00007 name=/app/oracle/oradata/ora9i/odm01.dbf input datafile fno=00008 name=/app/oracle/oradata/ora9i/tools01.dbf channel ch00: starting piece 1 at 20-JAN-10 channel ch00: finished piece 1 at 20-JAN-10 piece handle=/backup/full708756233 comment=NONE channel ch00: backup set complete, elapsed time: 00:02:26 Finished backup at 20-JAN-10 Starting Control File and SPFILE Autobackup at 20-JAN-10 piece handle=/app/oracle/product/9.0.2/dbs/c-2494723682-20100120-00 comment=NONE Finished Control File and SPFILE Autobackup at 20-JAN-10 sql statement: alter system archive log current Starting backup at 20-JAN-10 current log archived channel ch00: starting archive log backupset channel ch00: specifying archive log(s) in backup set input archive log thread=1 sequence=1 recid=254 stamp=708756150 input archive log thread=1 sequence=2 recid=255 stamp=708756383 input archive log thread=1 sequence=3 recid=256 stamp=708756383 channel ch00: starting piece 1 at 20-JAN-10 channel ch00: finished piece 1 at 20-JAN-10 piece handle=/backup/arch708756383 comment=NONE channel ch00: backup set complete, elapsed time: 00:00:02 Finished backup at 20-JAN-10 Starting Control File and SPFILE Autobackup at 20-JAN-10 piece handle=/app/oracle/product/9.0.2/dbs/c-2494723682-20100120-01 comment=NONE Finished Control File and SPFILE Autobackup at 20-JAN-10 released channel: ch00 假设现在数据库异常宕机 引用
SQL> shutdown abort ORACLE instance shut down 启动数据库至nomount状态 引用
SQL> startup nomount ORACLE instance started. Total System Global Area 1125193868 bytes Fixed Size 452748 bytes Variable Size 335544320 bytes Database Buffers 788529152 bytes Redo Buffers 667648 bytes 1、利用dbms_backup_restore恢复控制文件 引用
SQL> DECLARE 2 devtype varchar2(256); 3 done boolean; 4 BEGIN 5 devtype := dbms_backup_restore.DeviceAllocate(type => '',ident => 'testctl'); 6 dbms_backup_restore.RestoresetdataFile; 7 dbms_backup_restore.RestoreControlFileto('/app/oracle/oradata/ora9i/control01.ctl'); 8 dbms_backup_restore.RestoreBackupPiece('/backup/full708756233',done => done); 9 dbms_backup_restore.RestoresetdataFile; 10 dbms_backup_restore.RestoreControlFileto('/app/oracle/oradata/ora9i/control02.ctl'); 11 dbms_backup_restore.RestoreBackupPiece('/backup/full708756233',done => done); 12 dbms_backup_restore.RestoresetdataFile; 13 dbms_backup_restore.RestoreControlFileto('/app/oracle/oradata/ora9i/control03.ctl'); 14 dbms_backup_restore.RestoreBackupPiece('/backup/full708756233',done => done); 15 dbms_backup_restore.DeviceDeallocate; 16 END; 17 / PL/SQL procedure successfully completed. 当然也已可用rman进行控制文件恢复 引用
RMAN> restore controlfile from '/app/oracle/product/9.0.2/dbs/c-2494723682-20100120-00'; Starting restore at 20-JAN-10 using channel ORA_DISK_1 channel ORA_DISK_1: restoring controlfile channel ORA_DISK_1: restore complete replicating controlfile input filename=/app/oracle/oradata/ora9i/control01.ctl output filename=/app/oracle/oradata/ora9i/control02.ctl output filename=/app/oracle/oradata/ora9i/control03.ctl Finished restore at 20-JAN-10 2、利用dbms_backup_restore恢复数据文件 引用
SQL> DECLARE 2 devtype varchar2(256); 3 done boolean; 4 BEGIN 5 devtype := dbms_backup_restore.DeviceAllocate (type => '',ident => 'testdatafile'); 6 dbms_backup_restore.RestoreSetDatafile; 7 dbms_backup_restore.RestoreDatafileTo(dfnumber => 1,toname => '/app/oracle/oradata/ora9i/system01.dbf'); 8 dbms_backup_restore.RestoreDatafileTo(dfnumber => 2,toname => '/app/oracle/oradata/ora9i/undotbs01.dbf'); 9 dbms_backup_restore.RestoreBackupPiece(done => done,handle => '/backup/full708756233', params => null); 10 dbms_backup_restore.DeviceDeallocate; 11 END; 12 / PL/SQL procedure successfully completed. 3、利用dbms_backup_restore恢复归档日志 引用
SQL> DECLARE 2 devtype varchar2(256); 3 done boolean; 4 BEGIN 5 devtype := dbms_backup_restore.DeviceAllocate (type => '',ident => 'testarchlog'); 6 dbms_backup_restore.RestoreSetArchivedLog(destination=>'/app/oracle/product/9.0.2/dbs/arch'); 7 dbms_backup_restore.RestoreArchivedLog(thread=>1,sequence=>1); 8 dbms_backup_restore.RestoreArchivedLog(thread=>1,sequence=>2); 9 dbms_backup_restore.RestoreArchivedLog(thread=>1,sequence=>3); 10 dbms_backup_restore.RestoreBackupPiece(done => done,handle => '/backup/arch708756383', params => null); 11 dbms_backup_restore.DeviceDeallocate; 12 END; 13 / PL/SQL procedure successfully completed. |